Telegraph-key.



PATENTED MAR. 20, 1906. J. J. GHEGAN. TELEGRAPH KEY; APPLICATION FILED JAN. 28. 1905.

' WITNESSES INVENTOR 1wd ATTORNEYS JOH J GHEGAN Q NEWARK, EW-

TELEGRAPH-KEY.

Patented March 20, 1906 Application filedil' anuary 28, 1905. Serial No. 248,082.

To all hen it ma armen -1 B i kn wn a 'L: t zse qt i t. United; -tatss f- Areeri a re: Siding in the y of Newaltk, G i IltY-Qf a e State of New Jersey, have inventedan Improved Telegraph-Key, of which the follow- GHEa N, a

ing is a specification.

The object of this invention is to provide a cheap, efficient, and simple telegra h-key of the kind in which the lever is astically mounted at one end and is preferably provided with a pair of contacts at the other In the accompanying drawings, Figure 1 is aplan viewof the key of my invention in open position- Fig. 2 is a side elevation of the same. Fig. 3 is a" section on'the line 3 3, 1; and Fig. l is a section on the line 4 4, Fig. .1.

Iprovide a metallic base-plate A, shown as of oval design, to one end of the surface of which I secure a yoke y, of metal, provided with adjustable contact-screws s. The yoke may be secured by a screw 1, passing upward through the base. To the other end of the plate I securely fasten a block B, preferably by a pair of screws 2 3. The block B is of any suitable insulating material, preferably of ebonite, and is slotted at one end-at 4 and is drilled across its width with a hole to receive a screw 9. j

' The key-lever L is composed of a metallic shank having the usual knob 6 at one end,

Y and though of an integral piece of metal it is ing-post 12 is provided for the outer conducis independent of either contact-point andmade thinand spring-like or elastic at one.

end, which end may fit into the slot of the block B and be secured by rivets 7 8 passing through the block. This forms the only point of support-required for the key. The key-lever L is thus mounted above the base and, as shown in the drawings, is in a plane at right anglesto the base A, and is therefore adapted to be moved horizontally. A screw 9, adapted to beheldin contact with the end of the lever Within the block, is passed through the same and is secured by the rounded nut 10. The protruding end of the screw may have a thumb-nut 11 to act as a binding-postfor the conductorv to be connected to the lever L, for which conductor an.

opening 5 is'made in the plate A. A bindtor and iselectrically and mechanically secured to the late A.

v The switc -lever 13 for closing the circuit mayconsist ofa pivotedang gg a tmee i i t nii t ne .9 *2 nd. Se. P ate tha tree; ba l? open position it will clear.

: if J. a. tirely, while when in. closed position, t will .t i r s rea td wit prtssare k -leve L an the m ba er that th r it. fr m. h Ytt ha a Pla e nd theppstl i i I claim as my invention 1. A telegraph-key, comprising a metallic base-plate, a spring'key-lever adapted to move horizontally, mounted at one end of the plate and above it, and insulated from it, and contact-points adjacent to the key-lever.

2. Atelegraph-key, comprising a metallic base-plate, a block of insulation secured thereto, a spring key-lever having an integral end mounted in said block and free of contact with the plate, and a contact-point in electrical connection with said plate.-

3. A telegraph-key, comprising a metallic base;- plate, a. block of insulation secured thereto, a singleepiece spring key-lever adapted to move horizontally, and permanently attached atone end to the block and free of contact with the plate, a contact-point in electrical connection with said base, and a pair ofbinding-posts, one for the key-lever and one for the base.

4. A telegraph-key, comprisin a metallic base-plate, a slotted block of insu ation upon it, an integral key-lever supported at one point only, comprlsing an unyielding portion and an elastic portion, said key-lever secured in the slot of the insulation-block in a plane at right angles to the base, and a contact in electrical connection with said base.

' 5. A telegraph-key, comprising a metallic" base-plate, a spring key-lever mounted at ATE T F I E-.1,

one end of the plate and above it, and insu- 'i lated from it, and contact-points adjacent to the key-lever, in combination with a pivoted switch-lever between the plate and key-lever and independent of either contact point, having an enlarged end adapted to be inserted between the plate and key-lever.

' 6. A telegraph-key, comprisin a metallic base-plate, a slotted blockof insu ation upon it, an integral key-lever, comprising an unyielding portion and an elastic portion, said key-lever secured in the slot of the insulated block in a plane at right angles to the base, and a contact in electrical connection with said base, in combination with a pivoted switch-lever independent of either contactpoint between the plate and key-lever, hav ing an enlarged end adapted to be inserted between the plate and key-lever.

7. A telegraph-key, comprising a metallic base plate, a block of insulation secured thereto, a single-piece spring key-lever adapted to move horizontally and having but one point of support.

8. A telegraph-key, comprising a metallic base-plate, a block of insulation secured thereto, a single-piece s ring key-lever adapted to move horizontally, and permanently attached at one point only and to said block of insulation.

9. A telegraph-key, comprising a metallic base-plate, a block of insulation secured thereto, a single-piece sprin key-lever attached to said block of insu ation, said key JOHN J. GHEGAN.

Witnesses:

Jos. K. DE LACY, W. H. BULL. 

